diff --git a/include/linux/pci.h b/include/linux/pci.h
index b9bb6c4..2aabe90 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -617,6 +617,68 @@
 	struct msix_entry *entries, int nvec);
 extern void pci_disable_msix(struct pci_dev *dev);
 extern void msi_remove_pci_irq_vectors(struct pci_dev *dev);
+
+/*
+ * MSI operation vector.  Used by the msi core code (drivers/pci/msi.c)
+ * to abstract platform-specific tasks relating to MSI address generation
+ * and resource management.
+ */
+struct msi_ops {
+	int needs_64bit_address;
+	/**
+	 * setup - generate an MSI bus address and data for a given vector
+	 * @pdev: PCI device context (in)
+	 * @irq: irq allocated by the msi core (in)
+	 * @msg: PCI bus address and data for msi message (out)
+	 *
+	 * Description: The setup op is used to generate a PCI bus addres and
+	 * data which the msi core will program into the card MSI capability
+	 * registers.  The setup routine is responsible for picking an initial
+	 * cpu to target the MSI at.  The setup routine is responsible for
+	 * examining pdev to determine the MSI capabilities of the card and
+	 * generating a suitable address/data.  The setup routine is
+	 * responsible for allocating and tracking any system resources it
+	 * needs to route the MSI to the cpu it picks, and for associating
+	 * those resources with the passed in vector.
+	 *
+	 * Returns 0 if the MSI address/data was successfully setup.
+	 **/
+
+	int	(*setup)    (struct pci_dev *pdev, unsigned int irq,
+			     struct msi_msg *msg);
+
+	/**
+	 * teardown - release resources allocated by setup
+	 * @vector: vector context for resources (in)
+	 *
+	 * Description:  The teardown op is used to release any resources
+	 * that were allocated in the setup routine associated with the passed
+	 * in vector.
+	 **/
+
+	void	(*teardown) (unsigned int irq);
+
+	/**
+	 * target - retarget an MSI at a different cpu
+	 * @vector: vector context for resources (in)
+	 * @cpu:  new cpu to direct vector at (in)
+	 * @addr_hi: new value of PCI bus upper 32 bits (in/out)
+	 * @addr_lo: new value of PCI bus lower 32 bits (in/out)
+	 *
+	 * Description:  The target op is used to redirect an MSI vector
+	 * at a different cpu.  addr_hi/addr_lo coming in are the existing
+	 * values that the MSI core has programmed into the card.  The
+	 * target code is responsible for freeing any resources (if any)
+	 * associated with the old address, and generating a new PCI bus
+	 * addr_hi/addr_lo that will redirect the vector at the indicated cpu.
+	 **/
+
+	void	(*target)   (unsigned int irq, cpumask_t cpumask,
+			     struct msi_msg *msg);
+};
+
+extern int msi_register(struct msi_ops *ops);
+
 #endif
 
 extern void pci_block_user_cfg_access(struct pci_dev *dev);